Conversion of Ammonia to Hydrazine Induced by High‐Frequency Ultrasound

Hydrazine is a chemical of utmost importance in our society, either for organic synthesis or energy use. The direct conversion of NH 3 to hydrazine is highly appealing, but it remains a very difficult task because the degradation of hydrazine is thermodynamically more feasible than the cleavage of the N−H bond of NH 3 . As a result, any catalyst capable of activating NH 3 will thus unavoidably decompose N 2 H 4 . Here we show that cavitation...